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| author | Andrew Lunn <andrew@lunn.ch> | 2014-02-22 20:14:48 +0100 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2014-02-22 20:41:24 +0000 |
| commit | 7f28fd6ebebb70eb2412f2775f2a19e3834601f6 (patch) | |
| tree | 2ad3ba279b32c6ba1742e8bf31106d28bf43b798 | |
| parent | dab7dfb6c0e23d5fab56824e40795872c13afc1c (diff) | |
| download | talos-obmc-linux-7f28fd6ebebb70eb2412f2775f2a19e3834601f6.tar.gz talos-obmc-linux-7f28fd6ebebb70eb2412f2775f2a19e3834601f6.zip | |
ARM: kirkwood: ioremap the cpu_config register before using it.
With the move to mach-mvebu and MULTI_V5, the global iomap for all
registers will be going away. So explicitly map the CPU configuration
register before using it.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| -rw-r--r-- | arch/arm/mach-kirkwood/board-dt.c | 22 | ||||
| -rw-r--r-- | arch/arm/mach-kirkwood/include/mach/bridge-regs.h | 1 |
2 files changed, 16 insertions, 7 deletions
diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c index 64151a4a378f..d5d8f4996722 100644 --- a/arch/arm/mach-kirkwood/board-dt.c +++ b/arch/arm/mach-kirkwood/board-dt.c @@ -191,15 +191,23 @@ eth_fixup_skip: } } +/* + * Disable propagation of mbus errors to the CPU local bus, as this + * causes mbus errors (which can occur for example for PCI aborts) to + * throw CPU aborts, which we're not set up to deal with. + */ +static void __init kirkwood_disable_mbus_error_propagation(void) +{ + void __iomem *cpu_config; + + cpu_config = ioremap(CPU_CONFIG_PHYS, 4); + writel(readl(cpu_config) & ~CPU_CONFIG_ERROR_PROP, cpu_config); + iounmap(cpu_config); +} + static void __init kirkwood_dt_init(void) { - /* - * Disable propagation of mbus errors to the CPU local bus, - * as this causes mbus errors (which can occur for example - * for PCI aborts) to throw CPU aborts, which we're not set - * up to deal with. - */ - writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG); + kirkwood_disable_mbus_error_propagation(); BUG_ON(mvebu_mbus_dt_init()); diff --git a/arch/arm/mach-kirkwood/include/mach/bridge-regs.h b/arch/arm/mach-kirkwood/include/mach/bridge-regs.h index 8b9d1c9ff199..2bd12fde1781 100644 --- a/arch/arm/mach-kirkwood/include/mach/bridge-regs.h +++ b/arch/arm/mach-kirkwood/include/mach/bridge-regs.h @@ -14,6 +14,7 @@ #include <mach/kirkwood.h> #define CPU_CONFIG (BRIDGE_VIRT_BASE + 0x0100) +#define CPU_CONFIG_PHYS (BRIDGE_PHYS_BASE + 0x0100) #define CPU_CONFIG_ERROR_PROP 0x00000004 #define CPU_CONTROL (BRIDGE_VIRT_BASE + 0x0104) |
